Hope this is the right place to ask.. I'm a Mechatronic Engineering student and am having difficulty programming the mill to cut diagonal edges of contours. I've worked through this tutorial which I understand. The problem I'm having is milling around the outside of the diagonal edge, not on it. I hope that makes sense. I'm unsure about the tool positioning at the start/end of cut, for example. Can someone explain how to do it? Thanks.


1 Answer 1


The feature you are describing is called the cutter radius correction. You can activate/deactivate it with the G-codes G40, G41, G42.

These will displace the path with the radius of the active cutter in positive or negative direction.

  • $\begingroup$ So I would mill the contour with the toolpath on the contour (as in the tutorial) but include cutter compensation which will take radius of the cutter into account and adjust accordingly? $\endgroup$
    – somers
    Apr 4, 2017 at 17:18
  • $\begingroup$ Yes, exactly as you say $\endgroup$
    – 50k4
    Apr 4, 2017 at 17:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.